Explanipedia

The First Release of ATLAS Open Data for Research Open

Zachary Marshall, L. Heinrich, M. Lassnig, Mariana Isabel Vivas Albornoz, S. Willocq · 2025

The ATLAS Collaboration has released an extensive volume of Open Data for Research use for the first time. The full datasets of proton collisions from 2015 and 2016, alongside a wide array of matching simulated data, are all offered in the…

ATLAS HL-LHC Demonstrators with Data Carousel: Dataon-Demand and Tape Smart Writing Open

M. Borodin, A. Klimentov, Tatiana Korchuganova, M. Lassnig, Julien Leduc , et al. · 2025

The High Luminosity upgrade to the LHC (HL-LHC) is expected to deliver scientific data at the multi-exabyte scale. To tackle this unprecedented data storage challenge, the ATLAS experiment initiated the Data Carousel project in 2018. Data …

ATLAS WLCG Data Challenge 2024 planning and implementation Open

A. C. Forti, P. Vokáč, M. Lassnig, Dimitrios Christidis, S. P. Mc Kee , et al. · 2025

ATLAS is participating in the World LHC Computing Grid (WLCG) Data Challenges (DC), a bi-yearly program established in 2021 to prepare for the data rates of the High Luminosity Large Hadron Collider (HL-LHC). In each challenge, the transfe…

Operational experience and R&D results using the Google Cloud for High-Energy Physics in the ATLAS experiment Open

Fernando Barreiro Megino, K. De, J. Elmsheuser, A. Klimentov, M. Lassnig , et al. · 2024

The ATLAS experiment at CERN relies on a Worldwide Distributed Computing Grid infrastructure to support its physics program at the Large Hadron Collider. ATLAS has integrated cloud computing resources to complement its Grid infrastructure …

The ATLAS experiment software on ARM Open

J. Elmsheuser, Fernando Barreiro Megino, A. De Salvo, Asoka De Silva, R. Hauser , et al. · 2024

With an increased dataset obtained during the Run 3 of the LHC at CERN and the even larger expected increase of the dataset by more than one order of magnitude for the HL-LHC, the ATLAS experiment is reaching the limits of the current data…

Accelerating science: The usage of commercial clouds in ATLAS Distributed Computing Open

Fernando Barreiro Megino, M. Borodin, K. De, J. Elmsheuser, A. Di Girolamo , et al. · 2024

The ATLAS experiment at CERN is one of the largest scientific machines built to date and will have ever growing computing needs as the Large Hadron Collider collects an increasingly larger volume of data over the next 20 years. ATLAS is co…

ATLAS Distributed Computing Evolution: Developments and Demonstrators Towards HL–LHC Open

D. Cameron, M. Lassnig, David South · 2024

The computing challenges at the HL–LHC require fundamental changes to the distributed computing models that have served experiments well throughout LHC. ATLAS planning for HL–LHC computing started back in 2020 with a Conceptual Design Repo…

Extending Rucio with modern cloud storage support Open

M-S. Barisits, R. M. Barnsley, Fernando Harald Barreiro Megino, J. Elmsheuser, M. Lassnig , et al. · 2024

Rucio is a software framework designed to facilitate scientific collaborations in efficiently organising, managing, and accessing extensive volumes of data through customizable policies. The framework enables data distribution across globa…

Updates to the ATLAS Data Carousel Project Open

M. Borodin, David Cameron, A. Klimentov, Tatiana Korchuganova, M. Lassnig , et al. · 2024

The High Luminosity upgrade to the LHC (HL-LHC) is expected to deliver scientific data at the multi-exabyte scale. In order to address this unprecedented data storage challenge, the ATLAS experiment launched the Data Carousel project in 20…

How big is Big Data? A comprehensive survey of data production, storage, and streaming in science and industry Open

L. Clissa, M. Lassnig, L. Rinaldi · 2023

The contemporary surge in data production is fueled by diverse factors, with contributions from numerous stakeholders across various sectors. Comparing the volumes at play among different big data entities is challenging due to the scarcit…

Analyzing WLCG File Transfer Errors Through Machine Learning Open

L. Clissa, M. Lassnig, L. Rinaldi · 2022

Transport control networking Open

Jacob Dunefsky, Mahdi Soleimani, Ryan Yang, Jordi Ros-Giralt, M. Lassnig , et al. · 2022

Data-intensive sciences are becoming increasingly important for modern sciences. The transport control plane (TC-Plane) of the networks supporting data-intensive sciences can be important to achieve efficient and controlled transport of da…

Modelling Large-Scale Scientific Data Transfers Open

Joaquin Bogado, M. Lassnig, F. Monticelli, Javier Díaz · 2022

This work focuses on the study of a recently published dataset (Bogado et al. in ATLAS Rucio transfers dataset. Zenodo, 2020.) with data that allow us to reconstruct the lifetime of file transfers in the contexts of the Worldwide LHC Compu…

HEP Software Foundation Community White Paper Working Group -- Data Organization, Management and Access (DOMA) Open

D. Berzano, R. M. Bianchi, Ian Bird, Brian Bockelman, S. Campana , et al. · 2022

Without significant changes to data organization, management, and access (DOMA), HEP experiments will find scientific output limited by how fast data can be accessed and digested by computational resources. In this white paper we discuss c…

Common Software Activities in Data Organisation, Management, and Access (DOMA) Open

Marian Babik, M-S. Barisits, Andrea Ceccanti, Michael Davis, Alastair Dewhurst , et al. · 2022

This document represents the Data Organisation, Management and Access (“DOMA”) contribution to the HL-LHC Computing Review Stage 2: Common Software Activities. The document describes the four main areas requested in the charge. It is struc…

Preparing Distributed Computing Operations for the HL-LHC Era With Operational Intelligence Open

T. Dias Do Vale, F. Legger, Panos Paparrigopoulos, J. Schovancova, T. A. Beermann , et al. · 2022

As a joint effort from various communities involved in the Worldwide LHC Computing Grid, the Operational Intelligence project aims at increasing the level of automation in computing operations and reducing human interventions. The distribu…

Simulation and Evaluation of Cloud Storage Caching for Data Intensive Science Open

Tobias Wegner, M. Lassnig, P. Ueberholz, C. Zeitnitz · 2021

Simulation and evaluation of cloud storage caching for data intensive science Open

Tobias Wegner, M. Lassnig, P. Ueberholz, C. Zeitnitz · 2021

A common task in scientific computing is the derivation of data. This workflow extracts the most important information from large input data and stores it in smaller derived data objects. The derived data objects can then be used for furth…

The fight against COVID-19: Running Folding@Home simulations on ATLAS resources Open

A. C. Forti, Ivan Glushkov, L. Heinrich, M. Lassnig, D. South , et al. · 2021

Following the outbreak of the COVID–19 pandemic, the ATLAS experiment considered how it could most efficiently contribute using its distributed computing resources. After considering many suggestions, examining several potential projects a…

Experience with Rucio in the wider HEP community Open

M-S. Barisits, T. A. Beermann, D. Cameron, J. A. Clark, R. Di Maria , et al. · 2021

Managing the data of scientific projects is an increasingly complicated challenge, which was historically met by developing experiment-specific solutions. However, the ever-growing data rates and requirements of even small experiments make…

Methods of Data Popularity Evaluation in the ATLAS Experiment at the LHC Open

T. A. Beermann, Olga Chuchuk, A. Di Girolamo, Maria Grigorieva, A. Klimentov , et al. · 2021

The ATLAS Experiment at the LHC generates petabytes of data that is distributed among 160 computing sites all over the world and is processed continuously by various central production and user analysis tasks. The popularity of data is typ…

The ATLAS Data Carousel Project Status Open

M. Borodin, A. Di Girolamo, E. Karavakis, A. Klimentov, Tatiana Korchuganova , et al. · 2021

The High Luminosity upgrade to the LHC, which aims for a tenfold increase in the luminosity of proton-proton collisions at an energy of 14 TeV, is expected to start operation in 2028/29 and will deliver an unprecedented volume of scientifi…

Seamless integration of commercial Clouds with ATLAS Distributed Computing Open

Fernando Barreiro Megino, Singh Bawa Harinder, K. De, J. Elmsheuser, A. Klimentov , et al. · 2021

The CERN ATLAS Experiment successfully uses a worldwide distributed computing Grid infrastructure to support its physics programme at the Large Hadron Collider (LHC). The Grid workflow system PanDA routinely manages up to 700,000 concurren…

ATLAS Rucio Transfers Dataset Open

Joaquin Bogado, M. Lassnig, Fernando Monticelli, Javier Díaz, T. A. Beermann · 2020

This dataset is released to encourage the study of ATLAS file transfers in the Worldwide LHC Computing Grid environment, to better understand the transfer processes in this particularly heterogeneous environment. Joaquin Bogado (UNLP) Mari…

ATLAS Rucio Transfers Dataset Open

Joaquin Bogado, M. Lassnig, Fernando Monticelli, Javier Díaz, T. A. Beermann · 2020

This dataset is released to encourage the study of ATLAS file transfers in the Worldwide LHC Computing Grid environment, to better understand the transfer processes in this particularly heterogeneous environment. Joaquin Bogado (UNLP) Mari…

Forecasting network throughput of remote data access in computing grids Open

Volodimir Begy, M-S. Barisits, M. Lassnig, Erich Schikuta · 2020

Operational Intelligence for Distributed Computing Systems for Exascale Science Open

T. Dias Do Vale, F. Legger, Panos Paparrigopoulos, Alexei Klimentov, J. Schovancova , et al. · 2020

In the near future, large scientific collaborations will face unprecedented computing challenges. Processing and storing exabyte datasets require a federated infrastructure of distributed computing resources. The current systems have prove…

ATLAS Data Carousel Open

M-S. Barisits, M. Borodin, A. Di Girolamo, J. Elmsheuser, D. Golubkov , et al. · 2020

The ATLAS experiment at CERN’s LHC stores detector and simulation data in raw and derived data formats across more than 150 Grid sites world-wide, currently in total about 200PB on disk and 250PB on tape. Data have different access charact…

The NOTED software tool-set improves efficient network utilization for Rucio data transfers via FTS Open

Coralie Busse-Grawitz, Edoardo Martelli, M. Lassnig, Andrea Manzi, Oliver Keeble , et al. · 2020

We present NOTED, a project to better exploit WAN bandwidth for Rucio and FTS data transfers. We describe the developed software tool-box and a successful demonstration of automated load-balancing in the production network. The first compo…

Rucio beyond ATLAS: experiences from Belle II, CMS, DUNE, EISCAT3D, LIGO/VIRGO, SKA, XENON Open

M. Lassnig, M-S. Barisits, P. Laycock, C. Serfon, Eric Wayne Vaandering , et al. · 2020

For many scientific projects, data management is an increasingly complicated challenge. The number of data-intensive instruments generating unprecedented volumes of data is growing and their accompanying workflows are becoming more complex…

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